Rotary explosive-engine.



PATENTED JUNE 27, 1905.

H. E. B. BLOMGREN.

ROTARY EXPLOSIVE ENGINE.

APPLICATION FILED AUG. 18, 1902.

3 SHEETB-SHEET 1.

Imre r1751" PATENTED JUNE 27. I905.

H. B. B. BLOMGRBN.

ROTARY EXPLOSIVE ENGINE.

APPLIUATION FILED AUG. 18, 1902.

3 SHEETSSHEET 2.

No. 793,270. PATENTED JUNE 27, 1905. H. E. B. BLOMGREN.

ROTARY EXPLOSIVB ENGINE.

APYLIOATIOH FILED AUG. 18, 1902.

BSHEETS-SHBBT 3.

1712201175, ,B/onzgrafi NTTED STATas Patented June 27, 1905.

PATENT ()FFICE.

ROTARY EXPLOSlVE-ENGINE.

SPECIFICATION forming part of Letters Patent No. 793,270, dated June 27, 1905.

Application filed August 13,1902. Serial No. 120,072.

To (1 7K 107mm. fr? 'nm crmccrn:

Be it known that I, H ENRIK EDVARD BERN 1mm) BLoMoRux, draftsman, residing at Mastcrsamuelsgatan No. 55, Stockholm, Sweden, have invented certain new and useful improvements in Rotary Explosive-Engines; and 1 do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improved combustion or explosive engine operated by the explosion of charges of commingled air and kerosene or gasolene or other suitablehydrocarbon vapor; and it consists in the construction and combination of devices hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical longitudinal central sectional view of an explosive-engine embodying my invention. Fig. 2 is a vertical transverse central sectional view of the same. Figs. 3 and 4 are detail views of the revolving cams for operating the inlet and exhaust valves, respectively. Fig. 5 is a vertical longitudinal central sectional view of a modified form of my improved explosive'engine. Fig. 6 is a vertical transverse central sectional view of the same. Figs. 7 and 8 are similar views showing another modified form of my improved explosive-engine.

In the embodiment of my invention shown in Figs. 1 and 2 the cylindrical casing 1 is h'xed at its lower side on a base 2. The ends of the cylindrical casing are closed by heads a 5, bolted or otherwise suitably secured thereto, and the said heads are provided with bearings t'or the shaft 14:. Rigidly secured in the cylindrical casing is a cylindrical piston-casing 3, having a central chamber and a plurality of radially-disposed piston chambers or cylinders 4C2, communicating at their inner ends therewith. An annular peripheral water-chamber T is formed in and around the piston-casing between the latter and the easing 1, and in the inner sides of the head 1 is a water-chamber S. The piston-easing has water-chambers 9 10 adjacent to the piston chambers or cylinders, which water-chambers communicate with the water chamber 7 through which a circulation of water may be maintained by ports 11 12. The water-chamber 8 also communicates with the water-chamber 7 through suitable channels.

Rigidly lixed to and revoluble with the shaft 14: is a driving-cam 13, which is here shown as having a plurality of radial arms. Camheads 21 on opposite sides of the drivingcam are secured to rotate therewith, and with the driving-shaft are disposed, together with the driving-cam, in the central chamber of the piston-casing and are provided on their inner sides with cam-flanges 18. On the outer side of the cam-head 20 are inlet-valve-operating cams 33, and on the outer side of the cam-head L1 is an exhaust-valve-operating cam-flange 10.

Pistons 17 are disposed to operate in the radially-disposed piston cylinders or chambers 12, and each has an inwardly-extending rod 16, rigidly secured thereto or formed therewith, that carries antit'riction-rollers 15 19, which respectively engage the cam-faces of the driving-cam and the cam-flanges 18 of the driving-cam heads and are disposed to travel in the camways formed by the said camfaces and cam-flanges, the reciprocatingmovements of the pistons in the cylinders of the lixed piston-casing serving to impart revolution to the driving cam and shaft, as will be understood. A ring 6, secured on the periphery of the piston-casing closes the outer ends of the piston chambers or cylinders.

The head #1 is provided with a chamber for a feed-valve 21, which is closed by a spring and is opened by the partial vacuum which is created by each explosion. A reservoir 22 for kerosene, gasolene, or other liquid hydrocarbon is here shown secured on the upper side of the cylimlrical casing 1 and provided with a feed-pipe 23, that leads to the chamber which contains the feed-valve. An airsupply pipe 25 also leads to said chamber. The head 1 also has a mixing-chamber 26, fed

with-liquid hydrocarbon and air by the valve 26 and in which is a lining 41, which is a good conductor of heat and which becomes heated vided with an igniter 29 of suitable construction. At the inner end of the chamber 27 is a chamber 28, which communicates with inlet-channels 30, that lead to the outer ends of the piston chambers or cylinders 42. The inlet-port of each of these channels is controlled by a valve 31, closed by a spring 34 and opened by the cams 33. Exhaust-channels 35 lead from the outer ends of piston chambers or cylinders to an exhaust-chamber 37 in the inner side of the head 5 and having an exhaust-opening 36. The ports of the exhaust-channels are controlled by the exhaustvalves 38, which are closed by springs with which they are provided and opened by the cam-flanges 40, said exhaust-valves being here shown as provided with antifriction rollers 39, that engage said cam-flanges.

The driving-cams engaged by the rollers of the piston-rods and the inlet and exhaust valve operating cam-flanges are so related that the alternate pistons are caused to operate simultaneously in reverse directions, the exploded charges driving the pistons inwardly to cause the rotation of the driving cam and shaft, and said cam causes the pistons after the charges have been exploded behind them to be driven outwardly, thereby expelling the gases resulting from the explosions.

The operation is as follows: It will be observed by reference to Figs. 1 and 2 that the pistons by reason of their being connected to the cam 13 are reversely disposed alternately that is to say, when'one piston is at the outer limit of its stroke the next adjacent piston is at the inner limit of its stroke. The cams 33 and 40 are arranged in alternation and serve, respectively,to simultaneously open the valves 31, which control the inlet-passages of the cylinders in which the pistons are at the outer limits of their strokes and permit the closing of the valves 38, which control the exhaustpassages of such cylinders and to permit the closing of the valves 31, which control the inlet-passages of the cylinders in which the pistons are at the inner limits of their strokes and to open the valves 38, which control the exhaust-passages of such cylinders. Hence while the explosions are utilized to drive the pistons on their inward or working strokes in each alternate cylinder the exploded charges in the other cylinders in which the pistons are being driven outwardly by the cam 13 are exhausted, as will be understood.

In the form of my invention shown in Figs. 5 and 6 the casing incloses only one side of the piston-casing 44, which is secured thereto against rotation. The outer ends of the piston cylinders or chambers 43 are open. The piston-rods 46 of the pistons 47 project outwardly, and the rollers 48 49, carried by the piston-rods, respectively engage the inner cam-faces 50 and the outer sides of the camflanges 51 of the driving-cam 52, which is secured to and rotates the shaft 53, that has one bearing in the casing-head 45 and the other in a suitable standard 54. A valve-operating cam 55, that revolves with the shaft 53, is provided on opposite sides with cam-flanges 56 57 to respectively open the inlet and exhaust valves 58 59. Tater-chambers in the piston-casing are indicated at 60 61, the inlet thereto being indicated at 62 and the outlet at 63. The inlet and exhaust valves are closed by the springs with which they are shown provided and have antifriction-rollers 64 65, which respectively engage the cam-flanges 56 and 57 In the form of my invention shown in Figs. 7 and 8 the piston-cylinders 66 are disposed in an annular series with their axes parallel, so that the movements of the pistons 67 are in paths which are parallel with the shaft 68. The driving-cam 69, secured to and revoluble with the shaft, has its inner and outer camfaces 70 71 engaged, respectively, by the rollers 72 73, with which the rods of the pistons are provided. The arrangement and construction of the inlet and exhaust valves and of the cam for operating them is substantially the same as in the form of my invention shown in Figs. 5 and 6.

Having thus described my invention, I claim In an engine of the class described, an outer casing having at one end a spring-pressed normally closed feed-valve, a chamber therefor, an air-supply duct leading to said chamber, a mixing-chamber, communicating with the first-named chamber, an explosion-chamber communicating with the mixing-chamber, and having an exhaust-opening at the opposite end; an inner casing in the outer casing, having a central chamber, a plurality of radially-disposed piston chambers or cylinders communicating therewith, inlet-chambers leading from the explosion-chamber, to said cylinders, and exhaust-channels leading from said cylinders and communicating with the exhaust-opening of the outer casing; springpressed normally closed inlet and exhaust valves, controlling the said inlet and exhaust channels, a revoluble cam in the central chamber of the inner casing and having radial camarms, valve-operating cams rotating with said ezmnlocated also in said chamber and engaged my hand in presence of two subscribing witby and operating the inlet and exhaust Valves, nesses'.

and pistons in the cvlinders and having pis- 1 Y V V I, X I? Y Y- tondods engagmg and Operated by the Cam 11mm Ll)\ m1 Bhh\lIAhl) modem arms of the first-mentloned cam, substuntmlly \Vltnesses:

as described. N. MAKANSON,

In testhnony whereof I have hereunto set ("r. HAGGSTROM. 

